https://git.ruby-lang.org/ruby.git/commit/?id=afd765f2ee

From afd765f2ee1d7f0a34ad747d6103926ca100b120 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Mon, 23 Nov 2020 09:16:16 +0900
Subject: Initialize UTF-8 encoding first as it is used always now


diff --git a/ruby.c b/ruby.c
index 4feae77..2ddea6b 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1656,7 +1656,8 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt) https://github.com/ruby/ruby/blob/trunk/ruby.c#L1656
     const rb_iseq_t *iseq;
     rb_encoding *enc, *lenc;
 #if UTF8_PATH
-    rb_encoding *uenc, *ienc = 0;
+    rb_encoding *ienc = 0;
+    rb_encoding *const uenc = rb_utf8_encoding();
 #endif
     const char *s;
     char fbuf[MAXPATHLEN];
@@ -1850,8 +1851,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt) https://github.com/ruby/ruby/blob/trunk/ruby.c#L1851
 #endif
     }
     script_name = opt->script_name;
-    rb_enc_associate(opt->script_name,
-		     IF_UTF8_PATH(uenc = rb_utf8_encoding(), lenc));
+    rb_enc_associate(opt->script_name, IF_UTF8_PATH(uenc, lenc));
 #if UTF8_PATH
     if (uenc != lenc) {
 	opt->script_name = str_conv_enc(opt->script_name, uenc, lenc);
-- 
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